All solution processed superstrate type Cu2ZnSnS4 (CZTS) thin film solar cell: Effect of absorber layer thickness

Tumbul A., Aslan F., Goktas A., MUTLU İ. H.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.781, pp.280-288, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 781
  • Publication Date: 2019
  • Doi Number: 10.1016/j.jallcom.2018.12.012
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.280-288
  • Keywords: CZTS solar cell, Absorber thickness, Solution process, Superstrate type solar cell, SPRAY-PYROLYSIS, LOW-COST, PERFORMANCE, FABRICATION, TEMPERATURE, EFFICIENCY, ROUTE, PH
  • Akdeniz University Affiliated: Yes


In this study, superstrate-type ITO/TiO2/In2S3/C2ZnSnS4 thin film solar cells were investigated. We obtained thin film solar cells by using the facile, vacuum-free solution process which has no require complex system. The C2ZnSnS4 (CZTS) thin film was produced by solution process and dip-coating technique on the glass substrate and annealed at 515 degrees C for 30 min under argon condition. The CZTS thin film was characterized by means of XRD, micro-Raman, XPS, SEM-EDX, AFM and UV-Visible Spectrometer tools. The XRD result showed that the CZTS quaternary semiconductor crystallized in the kesterite phase formation. The Raman and X-ray photo-electron studies were conducted to support the formation of crystalline structure. The SEM and AFM images showed that the surfaces of substrate were covered with sub-micron sized CZTS absorber without any cracks. The optical study revealed that the CZTS has a suitable band gap energy about similar to 1.65 eV for solar cell applications. All the layers of the CZTS solar cells including the transparent conductive oxide (TCO) ITO, TiO2/In2S3 buffers and CZTS absorber layers were also coated on the soda-lime glass by the solution process, respectively. The ITO/TiO2/In2S3/CZTS device exhibited the solar conversion efficiency of 0.7% which was the first device that all layers including TCO obtained by means of the non-vacuum processed solution method. (C) 2018 Elsevier B.V. All rights reserved.